Metal weather-strip.



PATENTED Nov. 26; 1907.

L. S. BACON. METAL WEATHER STRIP.

APPLICATION run!) MAR. e. 1907.

UNITED STATES PATENT OFFICE.

LEVI SEWARD BACON, OF WASHINGTON, DISTRICT OF COLUMBIA. ASSIGNOR, BYMESNE ASSIGNMENTS,

MICHIGAN, A CORPORATION OF MICHIGAN, (ORGANIZED IN 1907.)

METAL WEATHER STRIP.

Specification of Letters Patent.

Patented Nov. 26, 1907.

Application filed March 6, 1907. Serial No. 360.948.

T all whom it may concern:

Be it known that I, LEVI SEWARD BACON, a citizen of the United States,residing at \Vashington, in the District of Columbia, have inventedcertain new and useful Improvements in Metal \Veather Strips, of whichthe following is a specification, reference being had therein to theaccompanying drawing.

This invention relates to improvements in weather strips, and moreparticularly to that type or class of weather strips now known as metalweather strips.

Heretofore metal weather strips which are constructed of relatively thinand somewhat flexible metal have been made with base or attaching partsand outwardly extending rib parts. Owing, however, to the fact that themetal is thin, it has been found in use that the ribs would become bentor deflected, the bending or deflection taking place usually at thejoint or bend between the rib and the base. This has been particularlyobj ectionable in connection with strips of this character which havebeen placed on window sills Where they are fully exposed. The objection,however, also applies to the side strips. It is a desirable feature inthe construction of metal weather strips to make the strips as thin aspossible so that they can be readily applied without cutting out theframe to afford seats and so that the strips can be properly secured inplace when the window frames are not exactly true.

The object of my invention is to provide a thin metal weather strip ofthe type above referred to which will possess the advantages of suchstrips and which will overcome the disadvantages.

l/Vith this in view, the invention comprehends generally thereinforcement of the strip at a point adjacent the bend between the baseand the rib. While this reinforcement can be acquired in many ways Ihave shown in the accompanying drawing a satisfactory method but do notdesire to be limited to the particular construction shown and describedhereinafter.

In the drawings: Figure 1 is a horizontal sectional view of a part of awindow frame and sash showing a part of the sill of the window framewith the strip applied, a portion of the strip being in section. Fig. 2is a perspective view of a portion of strip embodying the preferred formof the invention. Fig. 3 is a cross section of the strip shown in Figs.1 and 2. Fig. 4 is a sectional plan taken on a line through the base ofthe rib part and showing parts in elevation. Figs. 5 and 6 are viewssimilar to Figs. 2 and 4 but of modilied construction. Fig. 7 is an edgeView of the construction shown in Fig. 5. Fig. 8 is an edge view of adouble form of strip, and, Fig. 9 is a similar view showing thereinforcement or strengthening projections on one side of the doublerib.

In the drawings, A designates the sill, B the side, and C the runway ofa window frame of usual construction.

D designates the sliding sash having a groove (Z therein extending fromits edge in ward, the groove as is usual extending into the side edgesand bottom edge of the lower sash and side edges and top edges of theupper sash.

The metal weather strip shown in Figs. 1, 2, 3 and a consistsconveniently of a thin metal strip having an attaching or base part Eand a flange or bent up rib part E, the same being conveniently arrangedat right angles to the base. The outer edge of the rib is beaded as at cin any desirable manner. In structures of this type, the rib part canreadily be bent from its angular position, the bending taking placeusually at the point of union between the rib and base. To strengthenthis joint or point of union, I conveniently form a series ofreinforcements or braces F. These are formed by striking, bending in orindenting the metal adjoining the bend between the rib and base so as toform small braces of substantially triangular form, the material beingindented from one side and bulged or projected outwardly on the oppositeside, as shown in Fig. i. The indented parts extend a distance into thebase and up the side of the rib. The degree of extension, however, intothe base part is less than the overhanging beaded part of the upper edgeof the rib, as shown in Fig. 3 so that the brace or reinforce lieswithin the plane of the side edge of the rib. By this means thereinforcing means or braces do not interfere with the sealing action ofthe head on the rib. Any number of these reinforcements or strengtheningbraces can be made ful application to such a construction.

in the length of strip but it has been found that if they are arrangedabout an inch apart it will be sufficient to properly strengthen theparts. In manufacturing the strip the indentations or strengtheningbraces can be indented or bent in during the process of roll m In Figs.5, 6 and 7, a modified form is shown wherein the indentations are arranged in an order the reverse of that shown in the preceding figures.Nith this arrangement the braces serve as feet extending out and whichwill rest against the window frame. The projections or indentations areindicated at F in these figures.

In Fig. 8 is shown the well known double type formof rib, E designatingthe base flanges and e the beaded edge of the rib. The rib in thisconstruction is formed of metal bent upon itself and the reinforcementor strengthening braces are shown at F, they being formed on both partsof the rib. In Fig. 9 a somewhat similar structure to that of Fig. 8 isshown, the indentations or strengthening braces being indicated at F asapplied to one side only of the doubled tongue.

By forming the strengthening braces or reinforcement of the metal of thestrip, forcing the same inward by indentations entering from the anglebetween the two parts of the strip, the side walls of the indentationsas well as the apexes thereof standing at an oblique angle to the riband base, a very eflicient strengthening brace is provided which can beeasily applied, and so without puncturing the metal of the strip.

' While the invention is illustrated as applied to a metal weather striphaving a tongue member and a base member, I desire it understood that itis not limited in its use It is to be further understood that the stripcan be employed in connection with swinging sashes of casement windowsand it may pos sibly also be used advantageously in connection withdoors.

Having thus described the invention, what erases is claimed as new anddesired to be secured thin metal having a base portion and a rib portionarranged at an angle to the base, and a series of struck upstrengthening braces arranged within the angle between the rib and base.I

2. A metal weather strip consisting of a thin strip of metal having abase portion, a bent out rib portion formed with an overhanging edgepart and a series of braces at the angle between the base and rib, andbeneath the overhanging part of the rib.

3. A metal weather strip consisting of a thin metal strip having a baseportion, a rib portion, an offset portion on the rib, and a series ofstruck up braces extending from the base to the rib across the angle.

4. A weather strip consisting of a flat strip of suitable metal bent ordoubled longitudinally to form a raised rib at right angles to the baseand provided with a series of struck up strengthening braces located inthe angle and extending from the base to the rib.

5. The combination with a window frame or casing and a movable sashmember therein, of a metallic weather strip secured to the frame andprovided with a flat base, a projecting rib extending from the base intoa groove formed in the sash and having a series of indentedstrengthening braces extending from the base to the rib across the angleformed by the bend.

6. In combination with a frame or casing, and a movable sash, of ametallic weather strip secured to the frame and provided with a base, anoutwardly projecting rib having a beaded outer edge and a series ofbraces located below the bead and extending across the angle between thebase and rib.

In testimony whereof I aflix my signature in presence of two witnesses.

LEVI SEWARD BACON.

Witnesses:

Lee. E. HUTcHINsoN, CARRIE A. KREY.

